221110110101121 has 16 divisors (see below), whose sum is σ = 302699196735936. Its totient is φ = 143487281520576.

The previous prime is 221110110101113. The next prime is 221110110101137. The reversal of 221110110101121 is 121101011011122.

It is not a de Polignac number, because 221110110101121 - 2³ = 221110110101113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221110110101121.

It is not an unprimeable number, because it can be changed into a prime (221110110102121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2924931250 + ... + 2925006843.

It is an arithmetic number, because the mean of its divisors is an integer number (18918699795996).

Almost surely, 2^{221110110101121} is an apocalyptic number.

It is an amenable number.

221110110101121 is a deficient number, since it is larger than the sum of its proper divisors (81589086634815).

221110110101121 is a wasteful number, since it uses less digits than its factorization.

221110110101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849938432.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 221110110101121 its reverse (121101011011122), we get a palindrome (342211121112243).

The spelling of 221110110101121 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred ten million, one hundred one thousand, one hundred twenty-one".